Lily的博客

Given an array of N integers indexed from 1 to N, and q queries, each in the form i j, you have to find the number of distinct integers from index i to j (inclusive). Input Input starts with an integer T (≤ 5), denoting the number of test cases. The first

Sona, Maven of the Strings. Of cause, she can play the zither. Sona can’t speak but she can make fancy music. Her music can attack, heal, encourage and enchant. There’re an ancient score(乐谱). But because it’s too long, Sona can’t play it in a short moment.